Question

calculate the atomic number of an element whose mass number is 23 and has 12 neurons.what is the symbol of the element

Answer 1

the symbol of element is Mg magnesium

Answer 2

if we subtract the atomic mass number from the number of neutrons we get the number of protons i.e. 11 protons and the number of protons is equal to the number of electrons so there are 11 electrons and hence the element is
SODIUM symbol is (Na).